CDB4955A Cirrus Logic Inc, CDB4955A Datasheet - Page 3

• Manufacturer Part Number: CDB4955A
• Description: EVALUATION BOARD FOR CS4955A
• Manufacturer: Cirrus Logic Inc

Specifications of CDB4955A

• Main Purpose: Video, Video Processing
• Embedded: Yes, Other
• Utilized Ic / Part: CS4955
• Primary Attributes: NTSC/PAL Digital Video Encoder
• Secondary Attributes: Graphical User Interface, RS-232 Interface
• Operating Frequency: 27 MHz
• Interface Type: RS-232, Composite, RGB, S-Video
• Operating Supply Voltage: 3.3 V, 5 V
• Software: Software Included
• Silicon Manufacturer: Cirrus Logic
• Silicon Core Number: CS4955
• Kit Application Type: Audio / Video / TV
• Application Sub Type: Encoder / Decoder
• Kit Contents: Evaluation Board
• Rohs Compliant: No
• For Use With/related Products: CS4954
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

TABLE OF CONTENTS
DS278F6
1.
2.
3.
4.
5.
6.
7.
CHARACTERISTICS AND SPECIFICATIONS ........................................................................................6
AC & DC PARAMETRIC SPECIFICATIONS ............................................................................................6
RECOMMENDED Operating Conditions .......................................................................................................6
THERMAL CHARACTERISTICS ..............................................................................................................6
DC CHARACTERISTICS ..........................................................................................................................6
AC CHARACTERISTICS ..........................................................................................................................8
TIMING CHARACTERISTICS ...................................................................................................................9
ADDITIONAL CS4954/5 FEATURES .....................................................................................................11
CS4954 INTRODUCTION ......................................................................................................................11
FUNCTIONAL DESCRIPTION ...............................................................................................................11
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
4.15
4.16
OPERATIONAL DESCRIPTION ............................................................................................................15
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
5.12
5.13
5.14
5.15
5.16
FILTER RESPONSES ............................................................................................................................29
ANALOG ................................................................................................................................................32
7.1
7.2
7.3
7.4
Video Timing Generator ...............................................................................................................11
Video Input Formatter ..................................................................................................................12
Color Subcarrier Synthesizer .......................................................................................................12
Chroma Path ................................................................................................................................12
Luma Path ....................................................................................................................................13
RGB Path and Component YUV Path ..........................................................................................13
Digital to Analog Converters ........................................................................................................13
Voltage Reference .......................................................................................................................14
Current Reference ........................................................................................................................14
Host Interface ...............................................................................................................................14
Closed Caption Services ..............................................................................................................14
Teletext Services ..........................................................................................................................15
Wide-Screen Signaling Support and CGMS ................................................................................15
VBI Encoding ...............................................................................................................................15
Control Registers .........................................................................................................................15
Testability .....................................................................................................................................15
Reset Hierarchy ...........................................................................................................................15
Video Timing ................................................................................................................................16
5.2.1 Slave Mode Input Interface ...............................................................................................16
5.2.2 Master Mode Input Interface .............................................................................................16
5.2.3 Vertical Timing ...................................................................................................................17
5.2.4 Horizontal Timing ..............................................................................................................17
5.2.5 NTSC Interlaced ................................................................................................................17
5.2.6 PAL Interlaced ...................................................................................................................17
5.2.7 Progressive Scan ..............................................................................................................18
5.2.8 NTSC Progressive Scan ...................................................................................................18
5.2.9 PAL Progressive Scan ......................................................................................................19
ITU-R.BT656 ................................................................................................................................19
Digital Video Input Modes ............................................................................................................21
Multi-standard Output Format Modes ..........................................................................................21
Subcarrier Generation ..................................................................................................................22
Subcarrier Compensation ............................................................................................................23
Closed Caption Insertion ..............................................................................................................23
Programmable H-sync and V-sync ..............................................................................................24
Wide Screen Signaling (WSS) and CGMS ..................................................................................24
Teletext Support ...........................................................................................................................24
Color Bar Generator .....................................................................................................................26
VBI encoding ................................................................................................................................27
Super White/Super Black support ................................................................................................27
Interrupts ......................................................................................................................................27
General Purpose I/O Port .............................................................................................................27
Analog Timing ..............................................................................................................................32
VREF ............................................................................................................................................32
ISET .............................................................................................................................................32
DACs ............................................................................................................................................32
7.4.1 Luminance DAC ................................................................................................................32
7.4.2 Chrominance DAC ............................................................................................................33
7.4.3 CVBS DAC ........................................................................................................................33
7.4.4 Red DAC ...........................................................................................................................33
CS4954 CS4955
3